Riveting-machine



M. W.. WILKINS.

RIVETING MACHINE.

APPLICATION FILED MAR. 19. 1920.

Patented Nov. 2,1920.

2 SHEETS-SHEET I.

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ATTORNEY M. W. WILKINS.

RIVETING MACHINE.

APPLICATION FILED MAR. 19, 1920.

1,357,3 3, Patented Nov. 2, 1920.

2 SHEETS-SHEET-2.

MYRON W. WILKINS, OF GLOVERSVILLE, NEW YORK.

RIVETING-MACHINE.

Application filed March 19, 1920. Serial No. 367,155.

To cZZ to 7mm it may, concern:

Be it known that I, MYRoN W. WILKINS, a citizen of the United States, and a resident of Gloversville, in the county of Fulton and State of New York, have invented certain new and useful Improvements in Riveting- Machines, of which the following is a full, clear, and exact description.

The present invention has special relation to improvements in the construction and arrangement of riveting machines for which the United States Patent No. 731,399, was granted to me June 16, 1903, to which patent cross reference is here made. Certain obj ections to which the former machines have been subject are overcome in the improved machine, these objections consisting principally in the difiiculty of adjusting the wean ing parts, and of compensatingfor the wear and tear.

The objects of the present invention are to render the adjustments quicker and more easily made, and to insure the perfect operation of the machine, while simplifying the construction of the parts thereof.

Drawings.

Figure l is a side elevation of a machine constructed and arranged in accordance with the present invention;

Fig. 2 is a top plan view thereof, partly in section to show the interior construction thereof;

Fig. 3 is a detail view on enlarged scale, showing in plan the end of the hammer head and clippers;

Fig. 4 is a side view of the same;

Fig. 5 is a horizontal section thereof on diminished scale, the section being taken as on the line 55 in Fig. 4;

Fig. 6 is a detail view showing the plunger guide forming part of the head.

Description.

extend through perforations provided in the frame and through the intermediate layer of leather. Relatively long rivets having a head on oneend, are-extended through the Specification of Letters Patent.

Patented Nov. 2, 1920.

leather and frames, so that when delivered to the present machine, the surplus shank of" the rivets has to be shortened, and to this end the snips 11 and12 are employed, and operate in advance of the stroke of the hammer 13.

As seen best in Fig. 3 of the drawings, the

end of the snip 12 is blunted or squared,

ened edge ofthe snips is worn, it becomes necessary to move the snips to compensate for the wear. To this end each snip is provided with a shank let, the end 15 whereof is reduced to fit within a threaded tube 16. The tube 16 has a slot 17, for a screw driver, so that the tube may be advanced when the lock nut 18 has been retracted to permit this advance. The ends of the tube 16 rest against the shoulders formed on the shanks 14:, adjacent the reduced ends 15, and force the same forward. To maintain the service positions of theshanks 14, and to prevent the rotation of the said shanks and the consequent disalinement of the ships 11 and 12, the shanks have a flattened portion 19, against which rest the ends of set screws 20. 'VVhen the ships 11 and 12 are to be advanced, the screws 20 are relieved sufficiently to permit the movement of the snips and shanks 14 thereof. Immediately thereafter,

however, and when the ships are in correct position, the screws 20 are tightened to steady the shanks 14. They also serve to hold the shanks 14: when the lock nuts 18 are set up ortightened.

As stated, the snips 11 and 12 function in advance of the hammer 13. They also spread and are removed from the path of the advancing hammer 13 prior to the same moving into their plane of action. This operation is the result of the mounting of the snips and their shanks within the tubular ends 21 on the short or power side of the levers 22. The levers 22 are operatively con nected by spiral springs23, the ends where 22 for closing the snips 11 and 12 a cam blade 26 is furnished. I The blade 26 is set in thehammer plunger 2?, in which the hammer 13 is mounted. The ends of the blade 26 are cam shaped for riding the rollers 29 at the extremity of the levers 22.

The blade 26 being integral the shock of the blow of the blade on the rollers, 29 is compensated, and wear of the machine at this point is avoided, and the operation of the snips 11 and 12 is assured. .Whenever the blade 26 becomes worn, itmay be removed and replaced with ease when the plunger 27 is retracted tothe position shown in Figs. 2 and 3 of the drawings. A. great saving in the time of arranging the machine and in the operation thereof is made by the use of a cam blade of the character mentioned. The width ofthe cam blade 26 is such that the rollers 29 pass over the rear end of the blade v26 prior to the end ofthe hammer 13 reaching the snips 11 or 12.

V The springs 23 insure the retraction of the ends of the lever 22, and thus remove the snips ll and 12 out of the path of the advancing hammer head. Itis desirable to move the snips ll'and 12'as little as possible, it being necessary only to permit the hammer 13 to pass therebetween. To accomplish this the ends of the levers 22 are spread and normally rest in partially opened position. To this end cam blades 28 are provided as normal rests for the ends of the levers 22. The blades 28 are held on the head 30 by set screws 31, which extend through slots 32 in the curved extensions 33 of the blades 28. Theelongated slots 32 permit the advance and the recessionof the blades 28 independently; The independent movement of the blades 28 set forth permits an independent adjustment of each of the levers22 and of the snips connected therewith. This is peculiarly advantageous when one snip wears faster than the other, permitting, as it does, the setting of the wearing snip in advance of the other. It also admits of the adjustment above referred to, whereby the cutting snips merely pass through to the far side of the rivet, the dulled snip remaining at the far side, thus avoiding bending the rivet.

{The plunger 27 is driven forward by manual power, as set forth in the patent above referred'to, and is retracted by a spring 34:, the anchored end of which is secured ina pedestal35, which pedestal holds the goose neck 36 in which an anvil 37 is mounted, to cotiperate with the hammer 13. Each time the plunger. advances, the cam blade 26 is forced between the rollers 29, with the result that the levers 22 are rocked, to insure the functioning of the snips 11 and 12, to sever their rivet the head of which is held against the anvil 37,- with the shank resting between the said snips 11 and 12. With the continuation of the movement of the plunger 27, the blade 26 passes from between the rollers 29, permitting the springs 23 to draw the ends of the lever 22 together, with the result that the snips 11 and 12 are opened to permit theadvance of the hammer 13, for striking on the severed end of the rivet heads. 7 V

The operation of the machine being rapid,

require to be taken up. To this end, and as best seen in Fig. 4 of the drawings, the pins 38 are tapered, and rest in tapped holes provided therefor in the cross bars 39 of the head 33. A reduced extension 40 of the pins 38 is threaded to receive a nut 41. By means of this nut 41 the pins are drawn into their sockets, and into the bearings Claims.

1. A riveting machine comprising a plurality of rockmg levers; yielding means for normally holding the ends of said levers in juxtaposed relation; a plurality of co: operating cutting members each mounted on one of said levers; means for adjusting the working position of said cutting members;

head for passing between said cutting members; a removable rigid deflecting member for spreading the ends of said levers for 7 closing the cutting members carried by the opposite ends of said levers; and independently adjustable means for maintaining the inactive position of said levers for regulating the inactive position of saichcutting members. 1 r

2. A riveting machine comprising a plurality of rocking levers; yielding means for normally holding the ends of said levers in. juxtaposed relation; a plurality of cooperating cutting members each mounted on one of said levers; means for adjusting the working position of said cutting members; a reciprocating hammer member having a head for passin between said cutting members; a remova le rigid deflecting member the pivot pins 38 of the levers 22 wear, and

110 a reciprocating hammer member having a for spreading the ends of said levers for closing the cutting members carried by the opposite ends of said levers; and independently adjustable means for maintaining the inactive position of said levers for regulating the inactive position of said cutting members, said means embodying a plurality of cam blades forming rests for the ends of said levers, and movable lengthwise thereof.

3. A riveting machine comprising a plurality of rocking levers; yielding means for normally holding the ends of said levers in juxtaposed relation; a plurality of cooperating cutting members each mounted on one of said levers; means for adjusting the Working position of said cutting members; a

reciprocating hammer member having a head for passing between said cutting members; a removable rigid deflecting member.

for spreading the ends of said levers for closing the cutting members carried by the opposite ends of said levers; independently ad justable means for maintaining the inactive position of said levers for regulating the inactive position .of said cutting members, said means embodying a plurality of cam blades forming rests for the ends of said levers and movable lengthwise thereof; and means for fixing the Working position of said cam blades.

MYRON W. WILKINS. 

